Dynamometer.



.J. GOATES.

DYNAMOMETBR.

I APPLICATION FILED MAR 11, 1912.

1,059,37 Patented Apr.22, 1913.

2 BEETS-SHEET l.

&

EWWTR.

J. OOATES.

DYNAMOMETER.

APPLICATION FILED MAR.11, 1912.

Patented Apr. 22, 1913 2 SHEETS-SHEET 2.

WITN E55 E15.

sluices D JOHN COATES, OF MANCHESTER, ENGLAND.

nrnmoimrna.

Specification of Letters Patent- Patented Apr, 22, 1913.

Application filed March 11, 1912. Serial No. 683,055.

To all whom it mag concern:

Be it known that. I, Join: British subject, residing at Manchester,county of Lancaster, England, have invented certain new and usefulImprovements in Dynamometers, of which the following is a specification.

This invention relates to improvements in means for operating thesluices or plates between the rotor and stator'of a rotary absorptiondynamometer for the purpose of regulating the load upon the engine orother prime mover being tested.

COATES, a

The invention consists in mounting the hand wheel support or bracketupon a guide or guides and connecting it to a pivoted lever which can bemoved by a piston operated by steam, Water, compressed air or the like.Or the hand wheel'may be done away with and the sluices operated solelyby hydraulic or other fluid pressure.

The invention will be fully described with reference to the accompanyingdrawings forming part of the specification,

Figure 1. is a side elevation of a dynamometer with the inventionapplied thereto. Fig. 2. is an enlarged section through one of thesluices. Fig. 3. is a front elevation of Fig. 1. Fig. 4 is a sectionthrough Fig. 2, showing the cups of the stator and rotor.

The dynamometer A, balance arm, B, weights stator cups 0!, rotor cups dand are allof ordinary construction as are usual in this type ofdynamometer.

Guides E are affixed to each side of the dynamometer casing and on eachof these a bracket e is mounted. This bracket '6 is carried by the handwheel F which is mounted on the threaded rod fattached at its inner endto the sluice D. A pin e on the bracket e engagesin a slot 9 in a leverG. One end of this lever G is pivotally connected to the arm G aflixedto the dynamometer casing and the other end is pivotally connected to arod H actuated by the piston h of the cylinder K. This cylinder K hastwo double acting pistons h actuated by a common valve so that both willmove either in or out simultaneously.

guides E inder-having a pair of When it is desired to move the sluices,water or other fluid is admitted to the cylinder by the valve actuatedby the lever is; the two pistons here then; moved simultaneously andtransfer their movement through the rods H to the levers G. The movementof the levers G causes each of the brackets 6, hand wheels F and screwsf to be moved either backward or forward on the guides E and with themthe sluices D.

The hand wheels F are for the purpose of adjusting or cont-rolling thesluices by hand.

The water aptuating the piston k may be the same as that supplied to thedynamometer at the ordinary supply pressure, or it may be at a higher.pressure if desired. The Water supply is preferably so arranged that itcan be admitted slowly or suddenly so that the sluices may be removedeither slowly or quickly.

What I claim as my invention and desire to protect by Letters Patentis 1. In a rotary absorption dynamometer the combination with the rotorand sluices between the cups of the rotor and the cups of the stator toregulate the power, of a fluid pressure cylinder having a piston thereinto actuate the said sluices, and lever mechanism to connect ,said pistonwith the sluices.

2. In a rotary absorption dynamometer the combination with a casingprovided with water chambers and a rotor operating in said casing, ofsluices placed between the cups of the rotor and the cups of the statorto regulate the power, a fluid pressure cyldouble acting pistons thereinto actuate said sluices, lever mechanism to connect said pistons withthe sluices, and hand wheels mounted on the casing to actuate thesluices by hand.

In testimony whereof I have hereunto.set

my hand in presence of two subscribing witnesses.

JOHN COATES.

Witnesses:

HETHnRINeToN NIXON, FREDERICK HIND DUKE.

